Carbon pack for multiple web typewriting machines



Aug. 16, 1949. D. G. DALBY 2,479,156

CARBON PACK FOR MULTIPLE WEB TYPEWRITING MACHINES Filed March so, -194e DAMA/4.414,44.:

INVENTOR. Ee/erf /by BY @W8 QM TTRNEY Patented Aug. 16, 1949 f Delbert G.Da1by,Amari11o,Tex., assigner to' kRoberts lPaperCompany', Amarillo, Tex.:

'1..f`ljpp1icatimr Marci; so, 1946, serial Natta-164 n. 1

2 claims. (c1. 282-1) This invention relates to improvements in carbon pack for multiple web typewriting machines.

The main objects of this invention are:

First, to provide a carbon pack for manifolding machines which may be eiectively clamped or held in the machine in operative relation to the platten, and one which permits the web of paper being freely adjusted or moved in the operation of the typewriting machine.

Second, to provide a carbon pack for manifolding machines or typewriters which can be quickly and easily assembled or disassembled from a plurality of Webs of paper.

Objects relating to details and economies of the invention will appear from the description to follow. The invention is dened in the claims.

A structure which embodies the features of the invention is illustrated in the accompanying drawing, in which:

Fig. l is a plan view of a carbon pack embodying my invention, one sheet of carbon being partially turned up.

Fig. 2 is an enlarged fragmentary view in section on line 2-2 of Fig. 1.

Fig. 3 is a fragmentary plan view of a carbon pack clamping means constituting part of a type.. writer structure and illustrating the manner of supporting the carbon pack in the machine, the webs of paper not being illustrated.

My improved carbon pack is especially designed by me for use in a multiple web typewriting machine such as is illustrated in my co-pending application Serial No. 658,463, for Manifolding device, filed March 30, 1946, which issued as Patent 2,457,448 December 28, 1948.

I have in this application illustrated only such parts of the machine as seems desirable in illustrating the importance of certain features of my invention.

My improved carbon pack or unit comprises a plurality of carbon sheets I having laterally projecting tabs 2 and 3, the tabs projecting from the side edges of the sheets. The carbon sheets are arranged in superimposed relation as illustrated. The tabs 3 are bound together by means of the binding 4 which is a piece of exible material such as fairly tough or strong paper, the binding member being folded over the tabs 3 and secured thereto desirably by a row of stitches 5. The adhesive strips 6 desirably of transparent material constitute further securing means, these adhesive strips being lapped upon the sides of the binding member 4 and upon the outer sides of the outer sheets I and adhered thereto throughout the contacting surfaces. The thin, flexible adhesive strips 6 do not materially stiffen the carlbon, but they add quite materially to the binding security.

It will be observed that the sheets are bound only at one edge so that they may be freely manipulated for the introduction of the webs of paper between them. This is illustrated in my co-pending application.

The bound tabs 3 and the uri-bound tabs 2 project beyond the edges of the paper to be clamped by clamping means such as shown in detail in my co-pending application and comprising the clamping means 'I fixedly mounted on the frame vpieces 8 and the clamping rollers 9, carried by the eccentrically mounted rock shaft I0, the rock shaft journals II being journaled in the frame pieces 8.

The rock shaft is provided with a handle or finger piece I2 by which it may be rocked to bring the clamp rollers 9 into clamping engagement with the tab portions of the carbon sheets or to free the carbon sheets.

The bar clamping member supports the carbons and the interleaved webs of paper while the clamping members 9 clamp the carbon pack laterally of the webs of paper so that the Webs of paper may be manipulated through the sheets of the carbon pack.

I have illustrated and described my invention in a practical commercial embodiment thereof. I have not attempted to illustrate or describe certain embodiments or adaptations which might |be desirable for particular stationery or typewriting machines having particular characteristics, as it is believed that this disclosure will enable those skilled in the art to embody or adapt my invention as may be desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A carbon pack for manifolding machines comprising a plurality of unfolded carbon sheets provided with integral tabs projecting laterally and oppositely from their side edges and adjacent r their leading ends, a binding tab of pliable material folded over the tabs of the carbon sheets at one edge thereof and stitched thereto, and

strips of thin flexible adhesive material secured to said binding tab at the inner sides of the stitching thereof and lapped upon the outerA sheets of the pack to reinforce them adjacent the edges of the binding tab, the tabs at the other edges of the carbon sheets being unattached to each otherV facilitating the interleaving of vthe carbon sheets with a plurality of Webs with the their leading ends, a binding tab of pliable ma@ terial stitched to the tabs of the carbon sheets at one edge thereof, and stripsr'offthin material secured to said binding tab and lap upon the outer sheets of the paclg rein-,fprcegthem adjacent the edges of thenbindingrtab, .theg tabs at the outer edges of thecarpon sheetsnbeing unattached to each other facilitating theinter- 4 leaving of the carbon sheets with a plurality of webs with the binding tab and the unbound tabs of the sheets projecting beyond the edges of the paper webs for clamping engagement lbeyond the side edges of webs of paper interleaved therewith by means associated with a manifolding machine.

G.,. DALBY.

REFERENCES CITED The following references are of record in the 31e-0f.. this?, Bateau., Y

Y i UNITED STATES PATENTS Kumme- Name Date 'i' 5!i;2.58A Mellin Apr. 5, 1904 2, ,;1,1052 4, Fleming Mar. 8, 1938 2;'16111-44 Douglas June 6, 1939 

